<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title> 
</head>
<body>
  
  <form>
    <label for="nan">男</label>
    <input type="radio" id="nan" name="sex">

    <label for="nv">女</label>
    <input type="radio" id="nv" name="sex">
    
  </form>

</body>
</html>